<?php

/**
 * @file
 *
 * Provide views data and handlers for translation.module
 */
/**
 * @defgroup views_translation_module translation.module handlers
 *
 * @{
 */

/**
 * Implementation of hook_views_data_alter().
 *
 * Add translation information to the node table.
 */
function translation_views_data_alter(&$data) {

    // Joins
    $data['node']['table']['join']['node'] = array(
        'left_field' => 'tnid',
        'field' => 'tnid',
    );

    // Language field
    $data['node']['language'] = array(
        'group' => t('Node translation'),
        'title' => t('Language'),
        'help' => t('The language the content is in.'),
        'field' => array(
            'handler' => 'views_handler_field_node_language',
            'click sortable' => TRUE,
        ),
        'filter' => array(
            'handler' => 'views_handler_filter_node_language',
        ),
        'argument' => array(
            'handler' => 'views_handler_argument_node_language',
        ),
    );

    // The translation ID (nid of the "source" translation)
    $data['node']['tnid'] = array(
        'group' => t('Node translation'),
        'title' => t('Translation set node ID'),
        'help' => t('The ID of the translation set the content belongs to.'),
        'field' => array(
            'handler' => 'views_handler_field_node',
            'click sortable' => TRUE,
        ),
        'filter' => array(
            'handler' => 'views_handler_filter_numeric',
        ),
        'argument' => array(
            'handler' => 'views_handler_argument_node_tnid',
            'parent' => 'views_handler_argument_numeric', // make sure parent is included
            'name field' => 'title', // the field to display in the summary.
            'numeric' => TRUE,
            'validate type' => 'tnid',
        ),
        'sort' => array(
            'handler' => 'views_handler_sort',
        ),
        'relationship' => array(
            'title' => t('Source translation'),
            'help' => t('The source that this content was translated from.'),
            'base' => 'node',
            'base field' => 'nid',
            'handler' => 'views_handler_relationship',
            'label' => t('Source translation'),
        ),
    );

    // The source translation.
    $data['node']['translation'] = array(
        'group' => t('Node translation'),
        'title' => t('Translations'),
        'help' => t('Versions of content in different languages.'),
        'relationship' => array(
            'title' => t('Translations'),
            'help' => t('Versions of content in different languages.'),
            'base' => 'node',
            'base field' => 'tnid',
            'relationship table' => 'node',
            'relationship field' => 'nid',
            'handler' => 'views_handler_relationship_translation',
            'label' => t('Translations'),
        ),
    );

    // The source translation.
    $data['node']['source_translation'] = array(
        'group' => t('Node translation'),
        'title' => t('Source translation'),
        'help' => t('Nodes that are either untranslated or are the original versions of a translation set.'),
        'filter' => array(
            'handler' => 'views_handler_filter_node_tnid',
        ),
    );

    // The source translation.
    $data['node']['child_translation'] = array(
        'group' => t('Node translation'),
        'title' => t('Child translation'),
        'help' => t('Nodes that are translations of a source translation.'),
        'filter' => array(
            'handler' => 'views_handler_filter_node_tnid_child',
        ),
    );

    // Translation status
    $data['node']['translate'] = array(
        'group' => t('Node translation'),
        'title' => t('Translation status'),
        'help' => t('The translation status of the node--whether or not the translation needs to be updated.'),
        'field' => array(
            'handler' => 'views_handler_field_boolean',
            'click sortable' => TRUE,
        ),
        'filter' => array(
            'handler' => 'views_handler_filter_boolean_operator',
            'label' => t('Outdated'),
            'type' => 'yes-no',
        ),
        'sort' => array(
            'handler' => 'views_handler_sort',
        ),
    );

    // Translate node link.
    $data['node']['translate_node'] = array(
        'group' => t('Node translation'),
        'title' => t('Translate link'),
        'help' => t('Provide a simple link to translate the node.'),
        'field' => array(
            'handler' => 'views_handler_field_node_link_translate',
        ),
    );
}

/**
 * Implementation of hook_views_handlers() to register all of the basic handlers
 * views uses.
 */
function translation_views_handlers() {
    return array(
        'info' => array(
            'path' => drupal_get_path('module', 'views') . '/modules/translation',
        ),
        'handlers' => array(
            // field handlers
            'views_handler_field_node_language' => array(
                'parent' => 'views_handler_field_node',
            ),
            'views_handler_field_node_link_translate' => array(
                'parent' => 'views_handler_field_node_link',
            ),
            // argument handlers
            'views_handler_argument_node_language' => array(
                'parent' => 'views_handler_argument',
            ),
            'views_handler_argument_node_tnid' => array(
                'parent' => 'views_handler_argument',
            ),
            // filters
            'views_handler_filter_node_language' => array(
                'parent' => 'views_handler_filter_in_operator',
            ),
            'views_handler_filter_node_tnid' => array(
                'parent' => 'views_handler_filter',
            ),
            // relationships
            'views_handler_relationship_translation' => array(
                'parent' => 'views_handler_relationship',
            ),
            'views_handler_filter_node_tnid_child' => array(
                'parent' => 'views_handler_filter',
            ),
        ),
    );
}

/**
 * @}
 */
